Universal joint.



No; 669,974. Patented Mar. I9, |90L M. BARR.

UNIVERSAL JUINT.

(Applicatqn Blad Jan. 29, 1900,)

I(No Model.)

iforrwy.

UNITED STATES j PATENT OEEICE.

MARK BARR, OF BROADHEATH, ENGLAND, ASSIGNOR TO THE LINOTYPE COMPANY, LIMITED, OF LONDON, ENGLAND.

UNIVERSAL JOINT.

SPECIFICATION forming part of Letters Patent No. 669,974, dated March 19, 1901. Application filed January 29, 1900. Serial No. 3,209. (No model.)

T0 @u 7077107771 t may 0077109777: 4 is asecond round ring of rectangular cross- Be it known that I, MARK BARR, of the section concentric with the ring 3, standing Linotype Works, Broadheath, in the county outside it in the same plane and of about douof Chester, England, have invented certain ble diameter. 5 5 are a pair of flat ribbons 5 new and useful Improvements in Universal of steel or equivalent elastic material. Each 55 Joints or Gimbals; and I do hereby declare is made fast by its ends to the two rings, the the following to be a full, clear, and exact detwo alined opposite to each other, both in the scription of the invention, such as will enable horizontal plane that intersects the two rings others skilled in the art to which it apper- 3 4. To facilitate the connection of the ribfo tains to make and use the same., bon ends with the rings 3 4, respectively, both 6o The present invention relates to improverings are split along the central horizonments in universal joints or girnbals. Aca, tal plane, as indicated by the contrasted seccording to it, the inner portion of the joint, tioning of thetwo halves of the ring 3 in being the equivalent of the inner gimbal-ring Fig. 2. The ends of the ribbons are laid ber5 or of the ball of aball-and-socket joint,is contween the two halves, and screws 6 6 are 65 nected bytwo ribbons or thin Hat flexible webs passed down through one half-ring and the or plates of steel or equivalent elastic materibbon ends down into the opposite half-ring. rial to an external ring or frame. The``"said 7 7 are a pair of stationary blocks. They ribbons are opposite t0 each other and in the stand outside the ring 4, opposite to each zo same plane. The ring or frame is connected other and at about the saine distance from it 7o in exactly the same way as is the above-menas the ring 4 from the ring 3. They not only tioned inner portion to it to a pair of blocks stand diametrically opposite to each other, which are stationary as far as the combinaas do the two ribbons 5 5, but the diameter tion of the said ring or frame and inner porthat connects them is at right angles with the z5 tion is concerned. The two ribbons so condiameter that connects the said two ribbons. 75 necting the ring or frame to the pair of blocks 8 8 are a second pair of ribbons connecting are opposite to each other and at right anthe ring 4 to the pair of stationary blocks 7 7 gles with the first-mentioned pair, because in exactly the same way as `the pair 5 5 coneach pair is required to constitute an axis of neet the ring 3 to the ring 4. They are fiat,

3o oscillation, and such two axes must obviously as are the ribbons 5 5, of the saine dimen- 8o be at right angles with each other. sions, stand in the same plane, and are held Referring to the accompanying figures, to the rings 4 and blocks 7 by screws 9 in the which are to be taken as part ot' this specifisame way. They likewise stand exactly 0pcation and read therewith, Figure 1 is a plan, posite to each other and at right angles with 35 partly in section, of a round-ring joint with the pair 5 5. The combination of rings, 85 iiat ribbons. Fig. 2 is a section on line 2 2 blocks, and ribbons being as above described, of Fig. l. Fig. 3 is a plan, partly in section, it is evident that the strains in thejoint when of a square ring or frame joint with dat rib it is in action fall upon one or both of the bons. Fig. 4 is asection on line 4 4 of Fig. 3. pairs of ribbons and that such strains are tor- 40 Fig. 5 is a plan, partly in section, of a square sional. The amount of resilience in the rib- 9o ring or frame joint with vertical or edge-up bons 5 5 8 8 need not be more than is suffiribbonsl Fig. 6 is a section on line 6 6 of cient to return them into their normal posi-v Fig. 5. tions after they have been bent out of them Referring to Figs. 1 and 2, l is a round rod, by the working of the joint. They are not J'i5 which it is desired shall be mounted bya unicalled upon to either support the weight of 95 versal or gimbal joint about the center 2 of the rings 3 4 orthat of` the rod lorits equivathe section illustrated as an axis of oscillation lent or to return either of the three to its nor,- in anydirection. 3 is a round ring of rectanmal position. To prevent the action of the `guiar cross-section, through which the rod l ribbons 5 5 8 S being interfered with by the convex and concave contours of the two rings roo 5o passes and fits as tightly as may be required.

.3 4 Where the respective ribbons join them,

the said contours 10 are straight there in order that the respective ribbons shall be pinched straight across them, as shown iu Fig. 1. Y

Referring to Figs. 3 and 4, 1 is the central rod, and 2 its axis of oscillation. The round rings 3 4 of the construction illustrated in Figs. 1 and 2 and described therewith are replaced by two rectangular frames. 11 is the inner frame, on which the rod 1 or its equivalent iits in the same Way as described with reference to the rod 1 and the ring 3 of Figs. 1 and 2 and is so for the equivalent ofthe ring 3. 12 is the outer frame and is the equivalent of the ring 4. The adjacent sides 13 of the two frames fit up to each other and when the joint is in action rub over each other, the outer frame 12 supporting the inner one 11. 14 14 are clearance-spaces between each end of the inner frame 11 and the opposite end of the outer frame 12. 15 15 are the pair of ribbons connectingr the two frames 11 and 12. In respect of function, position, and method of fixation to the respective frames they are counterparts of the ribbons 5 5 above described. 16 16 are their holding-screws; but as the sides 13 of the two frames 11 12 [it up to each other there is a rectangular notch or indent-ations 17 in each side of the outer frame to make room for the respective ribbon 15. 18 1S are the pair of stationary blocks corresponding with the pair 7 7 of Figs. 1 and 2. The ends of the frame 12 fit up to the faces 19 of the respective block 18 and rub over them when the joint is working, receiving support therefrom in the same way as the sides 13 of the frame 11 from the adjacent sides ot the frame 12. 2O 20 are the pair of ribbons connecting the frame 12 by its ends to the respective block 18 and correspond with the ribbons 8 8 of Figs. 1 and 2in function, position, and method of fixation to the frame 12 and blocks 18; but as the ends of the frame 12 fit up to the respective blocks 18 there is a rectangular notch or indentation 21 in each block 18 to make room for the respective ribbon 20. 22 22 are the screws holding the said ribbons to the respective end of the frame 12 and block 18.

It is immaterial for the purpose of the invention, seeing that the strains on the ribbons are torsional only, whether they be flat, as illustrated in Figs. 1 to 4 and described therewith. They may be edge up, as shown in Figs. 5 and 6. 1 is the rod, and 2 its axis of oscillation, as already described. 23 is the inner frame, 24 the outer one, the sides 25 of the former fitting up to the adjacent sides of the frame 24 in the same way as the sides 13 in Figs. 3and 4; but the ends 26 of the inner frame 24 are convex, fitting up to the correspondingly concave ends 27 ot' the outer frame 24. This combination of concave and convex ends 26 and 27 is instead of the clearancespaces 14 of Figs. 3 and 4 and provides for the inner frame being supported at its ends as well as over its sides. 28 28 are the ribbons connecting the two frames 23 and 24. The two frames are shown as split centrally to receive the ends of the ribbons. 29 29 are the holding-screws. 30 30 are the indentations in the sides of the outer frame 24 to make room for the said ribbons. 31 31 are the stationary blocks, 32 32 the indentations to make room for the ribbons 33 33, which connect the outer frame 24 to them, and 34 34 the screws to hold the said ribbons to the respective block and frame.

I claim- In a universal or gimbal joint, the combination 0f inner ring or frame; outer ring or frame; two flexible and elastic ribbons connecting the two rings, one standing opposite to the other; two stationary blocks outside the outer ring or frame; two [iexible and elastic ribbons connecting the outer ring to the said b1ock,one standing opposite the other and at right angles with the first-mentioned two.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

MARK BARR.

Witnesses: n

HENRY HAsPER, WOLDEMAR HAUPT. 

